DE69728690D1 - PISTON AND A LIQUID CHAMBER FOR A NOZZLE ARRANGEMENT - Google Patents

PISTON AND A LIQUID CHAMBER FOR A NOZZLE ARRANGEMENT

Info

Publication number
DE69728690D1
DE69728690D1 DE69728690T DE69728690T DE69728690D1 DE 69728690 D1 DE69728690 D1 DE 69728690D1 DE 69728690 T DE69728690 T DE 69728690T DE 69728690 T DE69728690 T DE 69728690T DE 69728690 D1 DE69728690 D1 DE 69728690D1
Authority
DE
Germany
Prior art keywords
injector
nozzle assembly
piston
locking mechanism
liquid chamber
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Expired - Lifetime
Application number
DE69728690T
Other languages
German (de)
Other versions
DE69728690T2 (en
Inventor
David Schiff
Paul Mulhauser
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Antrares Pharma Inc Minneapolis Minn Us
Original Assignee
Medi Ject Corp
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Priority claimed from US08/773,660 external-priority patent/US5921967A/en
Application filed by Medi Ject Corp filed Critical Medi Ject Corp
Application granted granted Critical
Publication of DE69728690D1 publication Critical patent/DE69728690D1/en
Publication of DE69728690T2 publication Critical patent/DE69728690T2/en
Anticipated expiration legal-status Critical
Expired - Lifetime legal-status Critical Current

Links

Classifications

    • A—HUMAN NECESSITIES
    • A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
    • A61M—DEVICES FOR INTRODUCING MEDIA INTO, OR ONTO, THE BODY; DEVICES FOR TRANSDUCING BODY MEDIA OR FOR TAKING MEDIA FROM THE BODY; DEVICES FOR PRODUCING OR ENDING SLEEP OR STUPOR
    • A61M5/00—Devices for bringing media into the body in a subcutaneous, intra-vascular or intramuscular way; Accessories therefor, e.g. filling or cleaning devices, arm-rests
    • A61M5/178—Syringes
    • A61M5/30—Syringes for injection by jet action, without needle, e.g. for use with replaceable ampoules or carpules
    • A—HUMAN NECESSITIES
    • A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
    • A61M—DEVICES FOR INTRODUCING MEDIA INTO, OR ONTO, THE BODY; DEVICES FOR TRANSDUCING BODY MEDIA OR FOR TAKING MEDIA FROM THE BODY; DEVICES FOR PRODUCING OR ENDING SLEEP OR STUPOR
    • A61M5/00—Devices for bringing media into the body in a subcutaneous, intra-vascular or intramuscular way; Accessories therefor, e.g. filling or cleaning devices, arm-rests
    • A61M5/178—Syringes
    • A61M5/31—Details
    • A61M5/315—Pistons; Piston-rods; Guiding, blocking or restricting the movement of the rod or piston; Appliances on the rod for facilitating dosing ; Dosing mechanisms
    • A61M5/31511—Piston or piston-rod constructions, e.g. connection of piston with piston-rod
    • A—HUMAN NECESSITIES
    • A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
    • A61M—DEVICES FOR INTRODUCING MEDIA INTO, OR ONTO, THE BODY; DEVICES FOR TRANSDUCING BODY MEDIA OR FOR TAKING MEDIA FROM THE BODY; DEVICES FOR PRODUCING OR ENDING SLEEP OR STUPOR
    • A61M5/00—Devices for bringing media into the body in a subcutaneous, intra-vascular or intramuscular way; Accessories therefor, e.g. filling or cleaning devices, arm-rests
    • A61M5/50—Devices for bringing media into the body in a subcutaneous, intra-vascular or intramuscular way; Accessories therefor, e.g. filling or cleaning devices, arm-rests having means for preventing re-use, or for indicating if defective, used, tampered with or unsterile
    • A61M5/5066—Means for preventing re-use by disconnection of piston and piston-rod
    • A—HUMAN NECESSITIES
    • A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
    • A61M—DEVICES FOR INTRODUCING MEDIA INTO, OR ONTO, THE BODY; DEVICES FOR TRANSDUCING BODY MEDIA OR FOR TAKING MEDIA FROM THE BODY; DEVICES FOR PRODUCING OR ENDING SLEEP OR STUPOR
    • A61M5/00—Devices for bringing media into the body in a subcutaneous, intra-vascular or intramuscular way; Accessories therefor, e.g. filling or cleaning devices, arm-rests
    • A61M5/178—Syringes
    • A61M5/31—Details
    • A61M5/315—Pistons; Piston-rods; Guiding, blocking or restricting the movement of the rod or piston; Appliances on the rod for facilitating dosing ; Dosing mechanisms
    • A61M5/31511—Piston or piston-rod constructions, e.g. connection of piston with piston-rod
    • A61M2005/31516—Piston or piston-rod constructions, e.g. connection of piston with piston-rod reducing dead-space in the syringe barrel after delivery
    • A—HUMAN NECESSITIES
    • A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
    • A61M—DEVICES FOR INTRODUCING MEDIA INTO, OR ONTO, THE BODY; DEVICES FOR TRANSDUCING BODY MEDIA OR FOR TAKING MEDIA FROM THE BODY; DEVICES FOR PRODUCING OR ENDING SLEEP OR STUPOR
    • A61M5/00—Devices for bringing media into the body in a subcutaneous, intra-vascular or intramuscular way; Accessories therefor, e.g. filling or cleaning devices, arm-rests
    • A61M5/50—Devices for bringing media into the body in a subcutaneous, intra-vascular or intramuscular way; Accessories therefor, e.g. filling or cleaning devices, arm-rests having means for preventing re-use, or for indicating if defective, used, tampered with or unsterile
    • A61M5/5066—Means for preventing re-use by disconnection of piston and piston-rod
    • A61M2005/5073—Means for preventing re-use by disconnection of piston and piston-rod by breaking or rupturing the connection parts
    • A—HUMAN NECESSITIES
    • A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
    • A61M—DEVICES FOR INTRODUCING MEDIA INTO, OR ONTO, THE BODY; DEVICES FOR TRANSDUCING BODY MEDIA OR FOR TAKING MEDIA FROM THE BODY; DEVICES FOR PRODUCING OR ENDING SLEEP OR STUPOR
    • A61M5/00—Devices for bringing media into the body in a subcutaneous, intra-vascular or intramuscular way; Accessories therefor, e.g. filling or cleaning devices, arm-rests
    • A61M5/178—Syringes
    • A61M5/24—Ampoule syringes, i.e. syringes with needle for use in combination with replaceable ampoules or carpules, e.g. automatic
    • A—HUMAN NECESSITIES
    • A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
    • A61M—DEVICES FOR INTRODUCING MEDIA INTO, OR ONTO, THE BODY; DEVICES FOR TRANSDUCING BODY MEDIA OR FOR TAKING MEDIA FROM THE BODY; DEVICES FOR PRODUCING OR ENDING SLEEP OR STUPOR
    • A61M5/00—Devices for bringing media into the body in a subcutaneous, intra-vascular or intramuscular way; Accessories therefor, e.g. filling or cleaning devices, arm-rests
    • A61M5/178—Syringes
    • A61M5/31—Details
    • A61M5/315—Pistons; Piston-rods; Guiding, blocking or restricting the movement of the rod or piston; Appliances on the rod for facilitating dosing ; Dosing mechanisms
    • A61M5/31511—Piston or piston-rod constructions, e.g. connection of piston with piston-rod
    • A61M5/31515—Connection of piston with piston rod

Landscapes

  • Health & Medical Sciences (AREA)
  • Animal Behavior & Ethology (AREA)
  • Life Sciences & Earth Sciences (AREA)
  • Anesthesiology (AREA)
  • Biomedical Technology (AREA)
  • General Health & Medical Sciences (AREA)
  • Hematology (AREA)
  • Engineering & Computer Science (AREA)
  • Vascular Medicine (AREA)
  • Heart & Thoracic Surgery (AREA)
  • Public Health (AREA)
  • Veterinary Medicine (AREA)
  • Infusion, Injection, And Reservoir Apparatuses (AREA)
  • Nozzles (AREA)
  • Injection Moulding Of Plastics Or The Like (AREA)
  • Details Or Accessories Of Spraying Plant Or Apparatus (AREA)
  • Containers And Packaging Bodies Having A Special Means To Remove Contents (AREA)

Abstract

The present invention is directed toward a locking mechanism for aiding in the prevention of accidental or unintentional disengagement of the nozzle assembly from a needleless injection device. In one embodiment of the locking mechanism, a stud positioned on the nozzle assembly engages a recess in the injector to help to deter the nozzle assembly from rotating during firing of the injector. In another embodiment of the locking mechanism, a nib on the nozzle assembly engages a recess in the injector to deter the nozzle assembly from rotating during firing of the injector. A retaining element may be utilized within the injector to provide the recesses for engagement with the locking mechanisms.
DE69728690T 1996-12-24 1997-12-22 PISTON AND A LIQUID CHAMBER FOR A NOZZLE ARRANGEMENT Expired - Lifetime DE69728690T2 (en)

Applications Claiming Priority (4)

Application Number Priority Date Filing Date Title
US08/773,660 US5921967A (en) 1996-02-29 1996-12-24 Plunger for nozzle assembly
US773660 1996-12-24
US08/773,659 US5875976A (en) 1996-12-24 1996-12-24 Locking mechanism for nozzle assembly
PCT/US1997/023860 WO1998028030A1 (en) 1996-12-24 1997-12-22 Plunger for nozzle assembly

Publications (2)

Publication Number Publication Date
DE69728690D1 true DE69728690D1 (en) 2004-05-19
DE69728690T2 DE69728690T2 (en) 2005-08-18

Family

ID=41172495

Family Applications (1)

Application Number Title Priority Date Filing Date
DE69728690T Expired - Lifetime DE69728690T2 (en) 1996-12-24 1997-12-22 PISTON AND A LIQUID CHAMBER FOR A NOZZLE ARRANGEMENT

Country Status (10)

Country Link
US (1) US5875976A (en)
EP (1) EP0954344B1 (en)
JP (1) JP4014115B2 (en)
CN (1) CN1247475A (en)
AT (1) ATE264124T1 (en)
AU (2) AU5620098A (en)
DE (1) DE69728690T2 (en)
ES (1) ES2231904T4 (en)
TW (1) TW391882B (en)
WO (2) WO1998028030A1 (en)

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TW391882B (en) 2000-06-01
WO1998030253A3 (en) 1998-10-22
AU5718398A (en) 1998-07-17
EP0954344A1 (en) 1999-11-10
AU5620098A (en) 1998-08-03
CN1247475A (en) 2000-03-15
DE69728690T2 (en) 2005-08-18
ES2231904T4 (en) 2007-10-16
JP2001507963A (en) 2001-06-19
ATE264124T1 (en) 2004-04-15
US5875976A (en) 1999-03-02
WO1998028030A1 (en) 1998-07-02
JP4014115B2 (en) 2007-11-28
EP0954344A4 (en) 2000-08-09
EP0954344B1 (en) 2004-04-14
ES2231904T3 (en) 2005-05-16
WO1998030253A2 (en) 1998-07-16

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Owner name: ANTRARES PHARMA INC., MINNEAPOLIS, MINN., US

8364 No opposition during term of opposition